Vicruns 2S-0.4G-B, User Manual

Page: 144 / 300

-143-
Chapter 6 Description of Function Codes
Group P2: V/F control parameters
This group of function codes is only valid for V/F control (P0-03=2), and invalid for vector
control.
V/F control is suitable for general loads such as fans and water pumps, or applications where
one inverter has multiple motors, or where the power of the inverter is one level smaller than
that of the motor or more than two levels larger.
Function
code
Name
Description
(setting range)
Factory
Default
Change
P2-00 V/F curve setting 0 ～ 7 0
★
For fan and water pump loads, square V/F control can be selected:
0: Straight line V/F curve. Suitable for ordinary constant torque loads;
1: Multi-point V/F curve. Suitable for special loads such as dehydrators and centrifuges;
2: Square V/F curve. Suitable for centrifugal loads such as fans and pumps;
3 to 5: Corresponding to the 1.7th, 1.5th and 1.3rd degree V/F curves, which are between the
straight line and the square curve.
6: VP fully separated mode. At this time, the output frequency and output voltage of the inve-
rter are independent of each other, the output frequency is determined by the frequency sou-
rce, and the output voltage is determined by P2-15 (VP separation voltage source).
VP complete separation mode is generally used in induction heating, inverter power supply,
torque motor control and other occasions.
7: VP semi-separation mode.
In this case, V and P are proportional, but the proportional relationship can be set by the volt-
age source P2-15, and the relationship between V and P is also related to the rated voltage
and rated frequency of the motor in group P1.
Assuming that the voltage source input is X (X is a value between 0 and 100%), the relation-
ship between the output voltage V of the inverter and the frequency P is:
V/F=2 * X *
(motor rated voltage)/(motor rated frequency)
Function
code
Name
Description
(setting range)
Factory
Default
Change
P2-01 Torque boost 0.0%
～
30.0% 0.0%
☆
P2-02 Torque boost cut-off frequency
0.00Hz ～ Maximum
frequency
25.00Hz
★
C
h
a
p
te
r
6